Apparatus for making dough



@PARAMS Fon MAKING DoUGH original Filed oct. 29, 1925 I @WSU/La,

i Patented May 15, 1928.

UNIT

yJ'ULI'S E. WIELFAHRT, OE` NEW YORK', N. Y.

nrrana'ros son MAKING DOUGH.

original application sied october 29, 1925, semi' No; 65,699. Dividedand this appneatioa filed May 21,v 1926, serial No. 110,781. f

' This'application is a division'of application Serial #65,699, liledby'me on October an equipment which ,permits the manufac'` ture of animproved quality of bread, while l using a smaller amount of power tooperate.

the mixer and with a smaller amount of resultant heating.

My invention also permits a more thorough incorporation of theingredients of l the dough, by reason of affording a longer mixingperiod. My invention also results in greater uniformity and greater easeof control ofthe mixing process, as well as a better product. 'Otherobjects of my invention will 'appear from the specification, drawings,and claims,-submitted hereto. e

Referring to thevdrawing, Figure I shows a diagrammatic view 'of myinvention the equipment being indicated as partially broken away andpartially in section. In the drawing, (1) indicates a base or supportfor a dough mixer on which are placed upright frames (2) which servetofsupport shell (3) in which the ingredients are mixed to form a dough.

A central shaft (4) is mountedto rotate within shell andcarry auxiliarymixing arms (5) and (6). i

v The dough is indicated by reference #7.

pipe `connection (8) which enters by hole (9) in the top of the mixer(10).

The type of mixer which I have shown and here describe is not essentialto my invention as many kinds of dough mixer may be equipped withapparatus for carrying out my invention. I have merely chosen forpurposes-of illustration a typical form of dough mixer which I havefound to be satisfactory. y

Tank (11) represents diagrammatically the scale tank or measuringdevice, whereby, the water used in the ydough is measured.

Scale tank (11) may be hung from a standard weighing device or balanced,or measurements by means of a sight feed may be employed. In thedrawing, (12)'represents the source of supply from which the water isfed in the scale tank (11).

,Scale tank (11) is provided with two Water is fed into the shell (3)throughcocks (13) and (111) one'of 'which feed 'into funnel (15) 'a'ttheendfof pipe Whilethe other discharges into funnel (16) at the'end ofpipeV (17).k Pipe' (17)l is connected by means of a flexible joint (18)to' distribuer ing piper (19) located alongth'e top edge of the shell ofthe dough' mixer.v Distributing pip`e(19) is provided with a series ofholes (20) located preferably onitsunder side, and so arranged that thewater vin flowing -out of pipe (19)"would bedirected vagainst the sideof dough mixerfshell (3) serving to both cool and lubricate the shell.`Sprays (21) indicatediagrammatically a flow of liquidfromholes (20) vinpipe (19). Obviously this liquid may if desired beoil, lard,` oremulsions, but for commercial p'urposes I have found water to be verysatisfactory. A plate or shield (22) is shown covering and` protecting`distributing pipe (19).

Y `P late"(22) may be of any desired form, its

prime object being to preventgpipe (19)] from beoomin'g'clogged withdough or other` ingredients or brokenfor dsplaced bythe mechanical forceof the dough during the mixinggperiod. 'i

, A dotted line This lineA indicates diagrammatically thev level ofwater or otherliquid whichiwouldI run out of tank (11) vby opening-valve(13).

(23) is shown invtank (11). i

The water below the dotted line (23) ywould y only be ,drawn outl oftank (11) byopening valve (14:). y i H In the operation of my processand equipment I proportion the amountl of' waterv above the dotted lineintank (11) tothe amount of water below the d'oted line'link tank (11)suchl that the'sm'aller' quantity would be about 10% lof the total. I donot wish to be confined to this quantity as different doughs willrequire varying amo-unts of water and different grades of flour, orother ingredients will also change the ratio. In operating my device, Ifirst add the amount of water above dotted line (23) in 'tank (11) byopening cock (13) allowing j As the mixing proceeds, the-.dough becomesstiffer and thicker causing a greater resistance to the rotation of themixing deand the mixing of the ingredients isy begun.l

vice, andobviously producng a greater 'amount of heat.

In most commercial mixers theH prime source of friction is found toreside between the mass of dough and the` Walls of the shell By theterm, Walls I intend to include the sides, ends, bottom, etc. of

shell' -I have found that by introducing a ilm of kWater close toftheside of shell (3) as for example', as shown in' Figure-I by jets (2l)friction is ,materially reduced, heating of the doughis much lessra-pid,longer mixing periods are practical, and a much improved doughl results.Incidentally, the degree of hydfrationof the dough is increased owingtothe more' uniform distribution of Water.

Further, since it is a custom to employ cold Water in the mixingofvdoughs, it Will belapparent that the jets of cold Water entering fromdistributing pipe (19) serve also to cool the shell.k n Y e f It Will beapparent that the. Water used to lubric'ate and cool the sides of shell(3) may bespra'y'ed in undergair pressure if desirable or may be allowedto flow in by gravity', also as previously mentioned other materials maybe added With the Water through distribut ingfpipe (19) or inplace oftheivater.

yIf desired alsothe lubricating and cooling medium maybe addedcontinuously over the entire period of the mix or maybe addedprincipally in any desired portionof the nuX-v v -f 1 i This factor,may, of course, be controlled by the manipulation of cock (lil).

It will be apparent that many modiliea tions of this process may bemade, Without departing from the spirit off this invention. Other types`yof `"dough, mixers than that shown inIVigure I, may be employed and theprocess may, of course, b-e applied to many other materials than theinstance shownfor illustration; namely the manufacture of dough forbakery purposes. I do not Wish to be restricted to the exact structureshown or the exact stepsdescribed herein.A

Having now fully described my invention what I now claim as new and Wishto'secure by Letters of Patent in the United States is as follows:

l. A mixer consisting of a frame, a shell, a mixing element Within saidshell, an inlet for fluids in its top portion, and additionalindependent means for directing a lubricant vbetween said shell and thematerial being mixed.A y ,y n

2, A mixer consisting of a frame, a shell,

la mixing element Within said shell, an inlet for admitting fluids tosaid shell and .an additional independent 'distributing duct Within saidshell `and arranged' to distribute a liquid along said she'l f j n 3. Amixer consisting of a frame, a shell', a mixing element Within saids`hell,\a liuid 'inlet' into said shell, and astationary sub?stantallyhorizontal perfcrz'itedv duct Within said shell connected to'an independent inlet arranged horizontally of said shell to distribute aliquid on said/shell.

4. An equipment for mixing dough, conf sisting of a frame, a shellsupported by said frame, a mixing element rotatable vvithin said shell,a source' of'water supply connected directly to'ksaid shell, aperforated distributing pipe', located longiti-i,dinallyr of said shelland adjacent-to one of the sides of said shell, and an independentconnection from said source of Water supply' to saidperforateddistributing pipe, an independent means for controlling thellow of Wa'ter'fr'om said source of Water supply to said shell andlthedough. I 4

. JULIUSE. 'WIHLFAHR

